Thermoplastic resin composition

Abstract

A thermoplastic resin composition having superior processability and impact strength has: (A) 100 parts by weight of a composition comprising 95-5 % by weight of a polyphenylene ether obtained by oxidation polymerization of at least one phenol compound represented by the following formula: ##STR1## (wherein R 1 , R 2 , R 3 , R 4 and R 5 which may be identical or different, each represents a hydrogen atom, a halogen atom, a hydrocarbon group or a substituted hydrocarbon group and at elast one of them is a hydrogen atom) and 5-95 % by weight of a thermoplastic polyester, and (B) 0.01-10 parts by weight of an amino resin obtained by modifying, with an alcohol, an addition reaction product of formaldehyde and at least one compound selected from the group consisting of melamine, guanamine and urea.

We claim: 
     
       1. A thermoplastic resin composition which comprises: (A) 100 parts by weight of a composition comprising 95-5% by weight of a polyphenylene ether obtained by oxidation polymerization of at least one phenol compound represented by the following formula: ##STR8## wherein R 1 , R 2 , R 3 , R 4  and R 5  (which may be identical or different), each represents a hydrogen atom, a halogen atom, a hydrocarbon radical or a substituted hydrocarbon radical and at least one of them is a hydrogen atom, and 5-95% by weight of a thermoplastic polyester which is a polycondensation product of a dicarboxylic acid or its functional derivative and a dioxy compound or its functional derivative, and   (B) 0.01-10 parts by weight of an amino resin obtained by modifying, with an alcohol, an addition reaction product of formaldehyde and at least one compound selected from the group consisting of melamine, guanamine and urea.   
     
     
       2. A thermoplastic resin composition which comprises: (A) 100 parts by weight of a composition comprising 95-5% by weight of a polyphenylene ether obtained by oxidation polymerization of at least one phenol compound represented by the following formula: ##STR9## wherein R 1 , R 2 , R 3 , R 4  and R 5  (which may be identical or different, each represents a hydrogen atom, a halogen atom, a hydrocarbon radical or a substituted hydrocarbon radical and at least one of them is a hydrogen atom, and 5-95% by weight of a thermoplastic polyester which is polyethylene terephthalate, polybutylene terephthalate or a modified polymer containing the structure thereof, and   (B) 0.01-10 parts by weight of an amino resin obtained by modifying with an alcohol an addition reaction product of formaldehyde and at least one compound selected from the group consisting of melamine, guanamine and urea.   
     
     
       3. The thermoplastic resin composition according to claim 2 wherein the thermoplastic polyester is a combination of a polyphenylene ether having an intrinsic viscosity of 0.25-0.45 dl/g with polyehtylene terephthalate or polybutylene terephthalate having an intrinsic viscosity of 0.9-2.5 dl/g. 
     
     
       4. A thermoplastic resin composition according to claim 1, which further comprises: a component (C) comprising at least one impact strength modifier selected from the group consisting of natural and synthetic rubber-like polymer materials and modified rubber-like polymer materials. 
     
     
       5. A thermoplastic resin composition according to claim 2, wherein the amino resin (C) is represented by the following formula (I), (II) or (III): ##STR10## wherein R 6 , R 7 , R 8 , R 9 , R 10  and R 11  each represents a hydrogen atom, an alkyl group, an aryl group or a substituent denoted by the formula (I'): --CH 2  - O--R 12  where R 12  represents a hydrogen atom or an alkyl or cycloalkyl group of 1-10 carbon atoms, and at least one of R 6  -R 11  is a substituent denoted by the formula (I'): ##STR11## wherein R represents a hydrogen atom, an alkyl group, an alkoxy group or an aryl group excluding amino group, R 13 , R 14 , R 15  and R 16  each represents a hydrogen atom, an alkyl group, an aryl group or a substituent represented by the above-mentioned formula (I') and at least one of R 13  -R 16  is a substituent represented by the formula (I'); and ##STR12## wherein R 17 , R 18 , R 19  and R 20  each represents a hydrogen atom, an alkyl group, an aryl group or a substituent represented by the above-mentioned formula (I') and at least one of R 17  -R 20  is a substituent represented by the formula (I').